<template>
  <div>
    <!-- 商品分类导航 -->
    <div class="type-nav">
      <div class="container">
        <div class="nav-left" @mouseleave="mouseLeave" @mouseenter="mouseEnter">
          <h2 class="all" >全部商品分类</h2>
          <div class="sort" v-show="!isHiddenNav">
            <!-- 使用委托方式实现跳转节省资源 -->
            <div class="all-sort-list2" @click="btnSearch">
               
              <div
                class="item"
                v-for="c1 in categoryList.slice(0, -2)"
                :key="c1.categoryId"
              >
                <h3>
                     <!-- 一级导航链接，增加data-开头的自定义属性存储对应的数据便于传参 -->
                  <a  data-level="1" :data-id="c1.categoryId" :data-name="c1.categoryName" 
                  >{{ c1.categoryName }}</a>
                </h3>
                <div class="item-list clearfix">
                  <div class="subitem">
                    <dl
                      class="fore"
                      v-for="c2 in c1.categoryChild"
                      :key="c2.categoryId"
                    >
                      <dt>
                        <a data-level="2" :data-id="c2.categoryId" :data-name="c2.categoryName"
                        >{{ c2.categoryName }}</a>
                      </dt>
                      <dd>
                        <em v-for="c3 in c2.categoryChild" :key="c3.categoryId">
                          <a data-level="3" :data-id="c3.categoryId" :data-name="c3.categoryName">{{ c3.categoryName }}</a>
                        </em>
                      </dd>
                    </dl>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
        <nav class="nav">
          <a href="###">服装城</a>
          <a href="###">美妆馆</a>
          <a href="###">尚品汇超市</a>
          <a href="###">全球购</a>
          <a href="###">闪购</a>
          <a href="###">团购</a>
          <a href="###">有趣</a>
          <a href="###">秒杀</a>
        </nav>
      </div>
    </div>
  </div>
</template>

<script>
// import ajax from '@/api/ajax';

import { mapState } from "vuex";
export default {
  name: "TypeNav",
  data(){
    return {
      isHiddenNav:this.$route.meta.isHiddenNav
    }
  },
  mounted() {
    //发送请求 获取对应数据
    // ajax.get('/api/product/getBaseCategoryList').then(
    //     reqCategoryListData().then(
    //     result => console.log(result),
    //     error => console.log(error.message)
    // )
    //派发来
    // const A  =  reqCategoryListData('/api/product/getBaseCategoryList')
    // console.log(A);
    // this.$store.dispatch("home/getCategoryListData");
    // console.log(this.categoryList)
    //判断是否隐藏
    // if(this.$route.meta.isHiddenNav){
    //   this.isHiddenNav = true
    // }
  },
  computed: {
    //由辅助函数映射过来的数据就相当于是当前组件中data中的数据
    ...mapState("home", ["categoryList"]),
  },
  methods:{
    btnSearch(e){
        // this.$router.push('/search')
        const {level,id,name:categoryName} = e.target.dataset
        //排除非链接不跳转
        if(!level) return 
        const keyword = this.$route.query.keyword
        this.$router.push({
            name:'search',
            query:{
                keyword,
                ['category'+level+'Id']: id,
                categoryName
            }
        })

    },
    mouseLeave(){
      if(this.$route.meta.isHiddenNav){
        this.isHiddenNav = true
        // console.log(this.isHiddenNav);
      }
    },
    mouseEnter(){
      if(this.$route.meta.isHiddenNav){
        this.isHiddenNav = false
        // console.log(this.isHiddenNav);
      }
    }
  }
};
</script>

<style scoped lang="less">
.type-nav {
  border-bottom: 2px solid #e1251b;

  .container {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    position: relative;

    .all {
      width: 210px;
      height: 45px;
      background-color: #e1251b;
      line-height: 45px;
      text-align: center;
      color: #fff;
      font-size: 14px;
      font-weight: bold;
    }

    .nav {
      a {
        height: 45px;
        margin: 0 22px;
        line-height: 45px;
        font-size: 16px;
        color: #333;
      }
    }

    .sort {
      position: absolute;
      left: 0;
      top: 45px;
      width: 210px;
      height: 461px;
      position: absolute;
      background: #fafafa;
      z-index: 999;
      border-top:2px solid #e1251b;

      .all-sort-list2 {
        .item {
          &:hover{
            background:#bfa;
          };
          h3 {
            line-height: 30px;
            font-size: 14px;
            font-weight: 400;
            overflow: hidden;
            padding: 0 20px;
            margin: 0;

            a {
              color: #333;
              cursor:pointer;
            }
          }

          .item-list {
            display: none;
            position: absolute;
            width: 734px;
            min-height: 460px;
            background: #f7f7f7;
            left: 210px;
            border: 1px solid #ddd;
            top: 0;
            z-index: 9999 !important;

            .subitem {
              float: left;
              width: 650px;
              padding: 0 4px 0 8px;

              dl {
                border-top: 1px solid #eee;
                padding: 6px 0;
                overflow: hidden;
                zoom: 1;

                &.fore {
                  border-top: 0;
                }

                dt {
                  float: left;
                  width: 54px;
                  line-height: 22px;
                  text-align: right;
                  padding: 3px 6px 0 0;
                  font-weight: 700;
                }

                dd {
                  float: left;
                  width: 415px;
                  padding: 3px 0 0;
                  overflow: hidden;

                  em {
                    float: left;
                    height: 14px;
                    line-height: 14px;
                    padding: 0 8px;
                    margin-top: 5px;
                    border-left: 1px solid #ccc;
                  }
                }
              }
            }
          }

          &:hover {
            .item-list {
              display: block;
            }
          }
        }
      }
    }
  }
}
</style>
